Concrete railroad track



A. C. GRIEWANK. CONCRETE RAILROAD TRACK.

APPLICATION` FILED JAN-4. 1919.

Patented Apr. 25, 19.22.

, v v ,t o4 KIN. A.. Afl 4i @imam v NETE ARTHUR Ofc-Rinwnnmon OAKLAND, canino/niais..

vconcanina Raine-oni) TRACK.

Application filed January 4, 1919. ySerial No.' 269,594.l

The object of the present invention is to provide a novel construction of railroad I track,-which, while maderoic materials that are ascheap as those used at :present time, ,will be permanent and cost less to maintain than the present construction, while .being` able -to withstand shocks,- strains, and stresses l to which such tracks are ordinarily subjectf ed. This construction will prevent accidents which occur on the present construction.

In-the accompanying drawings Figure 1 is a plan of a reinforced concrete track systemconstructed in accordance with my invention, Figure 2V is a longitudinal sectional view of the same on the lineB-S ci Figure 1; Figure 3 is a longitudinal sectional view of the same on the line 4-4' of Figure 1;

Figure is a longitudinal sectional view of thesaine on the line 5-5 of Figure 1'; ures 5 and 6 are sectional views ci expansion joints; Figure 7 is a transverse sectic'nalview of the track on the line2--2 of Figure l; Figure 8 is a transverse -sectionalview of the same on the line 1.-1 oi Figure 1; Figures 9 'and 10 are transverse sectional views on the line 6 6 of Figure 1 with different types of rail; Figures 11, 12, 13 and 14 are large transverse sectional views on the line 6-6 of Figure 1 with diii'erent types of' rail.

Referring to the drawing, Figure l indicates a railroad track of concrete, or reinforced concrete, with cross ties 2. vAs shown at 5 the cross ties may project beyond the edge of the Stringer 1, or continuous longitudinal ties 1 with a metallic wearing surface 3, secured to 1 with clips and bolts 4, In Figures 2 and 3 are shown top reinforcing metal 7 and bottoni reinforcing metal 6 in cross ties 2; in Figures 3 and l are shown top reinforcing metal 9 and bottom reinforcing metal 8 and diagonal reinforcing metal 10 in the longitudinal ties cr girders l. Figure 5 and Figure 6 show expansion joints which may or may not be used; 11 in Figure 5, and 12 in Figure 6 is an elastic substance which will separate the vstringers 1 in Figure l into two parts while being constructed and vwhich will allow the members to expand or `which secure the metallic contract vwith change of temperature;k 9 and '8 indicate top 6 vwithout a break. V -1 In Figures and 8 are shown cross Aties 2, metallic wearing surfaces 3, longitudinal ties orgirders 1, top reinforcing metal 9,bottom reinforcingv metal 8, diagonal Yreinforcing metal 10; metal clips l and bolts -or fastening metallic wearing surfaces 3 -to the girders .1; 13 indicates a depression orfrecessijn the rs fr ersten-Q specification 0f Lette-ferment. atented YApr/255, A

n and bottom reinforcing metall .as continuousat lland 12 in Figures 5 and j longitudinalgirders orjtiesigiit'or the-'flanges f' *Y of car wheels; @ln Figure 8 is'`shown topand bottonireini'orcing metal ,Tand-8 finf cross :tiespassingfroin 2 into thegirders lf'without' a break.

liligure 9 shows a cross section cia long'i` 'i tudinal tie oigirder without the recess 13 anda metal wearing siiritace of lwhich Y "7aV Figure 12 is an enlarged section in which 16.V

is a lraised portion above 17 which. is a horizontal member 15o-distribute loads tothe concrete; the raised portion 16` allows the iiangeto pass and provides for a surfaceon which theface of the wheel is yto bear andr allow for wearQFigure 13 is 'asimilarcross 23 extending Atrom 'the base p 17 rwhich is to' act as a pavement retainer t Aare thecli'ps section toligure 12. with a vertical member i to the concrete ties andwhich allow the me! tallic wearing surface to move longitudinally i independen-t'ot the concrete ties while still held securely toit. In Figure 10,8 is a metallic wearing suri'ace composed of an ordiclips 1. Figure-11 is an enlarged sectional. View ot the longitudinal tie or girder 1 and metallic wearing suricace, as shown in Fig-v shaped to'receive the flange of the car wheel, which allows .for the wearing awayl of the same by the flange of the car wheel bearing against it; the recess 13m the longitudinal girder 1 in Figure .11 allows the vvertical part 20 of the wearingv surface 3, to bear vnary T rail fastened tothe concrete tie lwith i 4105 or thickened portion on vertical member `20, i

iio

continuously against the gir-der l, which will prevent thc metallic wearing surface 3 from spreading. Figure 14C isa similar' section to Figure ll with a vertical member 2:2 extending from the wing 'i8 of the metallic wearing surface 3, which will act as a pavement reand vertically 'for a'sliort distance.

2. A metallic wearing surface Jfor a railc road trackwith two wings .extending from a vertical member lin opposite directions at its ina-ieee' f edges with a `raised or thickened portion on the outside of one corner, near the edge of the wing extending from the opposite edge ot the vertical member on which is the raised portion, a member extending vertically approximately at right angles to saidV horizontal Wing.

3. A metallic wearing surface for a railway track, composed oi? a Vertical member, wings 'extending in opposite directions therefrom, and an enlarged portion including` a portion oit the wing at the intersection of the wingand the Vertical member.

1l. A metallic wearing surface for a railway track, with a wing and a vertical member and an enlarged portion at the intersection of the Vertical member and the wing.

5. A metallic wearing surface for a rail- 3 way track, with wings in opposite directions from a Vertical member andan enlarged portion including the vertical member and wing.

. ARTHUR c. enrewiinn. 

